<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form :model="loginForm" label-width="0px" class="login_form" :rules="loginFormRules" ref="loginFormRef">
        <!-- 用户名 -->
        <el-form-item prop="username">
            <el-input  v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
            <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!-- 登录重置按钮 -->
        <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
         data () {
           return {
                 loginForm:{
                   username:'admin',
                   password:'123456'
                 },
                loginFormRules: {
                   username:[
                      { required: true, message: '请输入用户名', trigger: 'blur' },
                      { min: 5, max: 10, message: '长度在 5 到 10 个字符', trigger: 'blur' }
                   ],
                   password:[
                      { required: true, message: '请输入密码  ', trigger: 'blur' }
                   ]
                 },           
           }
         },
         methods: {
          //  重置表单项
           resetLoginForm: function () {
             console.log(this);
                this.$refs.loginFormRef.resetFields();
             },
           login: function () {
                this.$refs.loginFormRef.validate(async value=>{
                  if(!value) return;
                  var {data:res}=await this.$http.post('login',this.loginForm);
                  if(res.meta.status==200) {
                    this.$message.success('登录成功');
                    // 将服务器换回的token保存到sessionStorage中
                    window.sessionStorage.setItem("token",res.data.token);
                    // 实现页面的跳转
                    this.$router.push('/home');
                  }
                  else {
                    this.$message.error('登陆失败');
                  }
                })
           }
         }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color:#fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>